Furnace.



No. 839,568. PATENTED DEC. 25, 1906. I. J. PINNIGAN.

PURNACE.

APPLIUATION FILED 15H25, 190e.

2 sums-SHEET 1, q|`\\-\\\;\\\\\\\`\\\\\\\\\\ v,

JOHN JOSEPH FINNIGAN,

OF ATLANTA, GEORGIA.

FURNACE.

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed May 25,1906. Serial No. 318.720.

To all r11/wm, t muy concern,.-

Be it known that I, J OHN JOSEPH FINNiGAN, a citizen of the UnitedStates, residing at Atlanta, in the county'y of Fulton and State ofGeorgia, have invented a new and useful Furnace, of which the followingis a specification..

This invention has relation to furnaces; and it consists in the novelconstruction and arrangement of its parts, as hereinafter shown anddescribed.

i The obj ect of the invention is to provide a furnace of specialconstruction which is equipped with a magazine portion located above thefire-box in such manner that when the fire is beinOr raked the supplyfuel from the magazine may be cut off.

The furnace consists of a vertical cylinder to which a horizontalcylinder is attached. A series of tubes extend through the horizontalcylinder and are connected atone end to a tube-sheet and at the otherend to the rear wall of the fire-box. A magazine extends from the top ofthe vertical cylinder to the top of the fire-box, and said magazine isprovided at its lower end with a detachable chute or potshapedreceptacle, which is adapted to convey the fuel from the saidcylindrical portion of the magazine into the fire-box. Said chute may belifted out of the said cylindrical portion and is so constructed at itslower end as to engage and receive a cut-off plate, which may beoperated through the door of the fire-box in such manner as to check theflow of the fuel through said chute.

In the accompanying drawings7 Figure 1 is a vertical sectional view ofthe furnace. Fig. 2 is a horizontal sectional view of the forward end ofthe furnace. Fig. 3 is a perspective view of the lower end of one formof chute. Fig. 4 is a perspective view of a form of cutoff plate adaptedto be used with the form of chute shown in Fig. 3. Fig. 5 is aperspective view of the lower end of another form of chute. Fig. 6 is aperspective view of a form of cut-off plate adapted to be used with theform of chute shown in Fig. 5, and Fig. 7 is a perspective view of thelower end of still another form of chute.

The vertical cylinder 1 rests upon the base 2, which in turn supportsthe grate 3. The horizontal cylinder 4 is attached at one end to thevertical cylinder 1. Said horizontal cylinder is provided at its otherend with a hinged door 5 and a smoke-outlet 6. The tube-sheet 7 is fixednear the outer end of the horizontal cylinder 4, and the fire-box 8 isarranged above the grate 3 in the lower portion of the cylinder 1. Thelire-tubes 9 9 are xed at one end to the back of the `lire-box 8 and atthe other end to the tubesheet 7. The lire-box 8 is preferably made ofsheet metal and is generally in the shape of a bell with its lower edgeriveted or otherwise secured to the inner walls of the cylinder 1. Saidrebox is provided with the. usual door 10, through which an implementmay be passed in orner to rake the coals that rest upon the grate 3.

The fuel-magazine consists of a cylinder.

11, which is attached at its upper end to the top of the cylinder 1 andat its lower end to the top of the fire-box S. A suitable swing cover 12is provided for the upper end of said cylinder 11. The cylinder 11 ispreferably made of sheet metal, and its vertical seam is securedtogether by the vertical line of rivets 13, while its lower edge isattached to the top of the lire-box S by the horizontal line of rivets14. The heads of said rivets are located within the said cylinder 11 andform two distinct lines, one being vertically disposed and the otherbeing horizontally disposed at the lower end of the said cylinder.

The chute 15 is in the form of a truncated cone-that is to say, it isconical in shape and when in position its smaller end is in the lowerplane. It is provided at its upper end with an exterior annular ange 167which is adapted to rest upon the heads of the line of rivets 14,located at the lower end of the cylinder 11. The said chute is providedat one side with a recess 17, through which the heads of the line ofrivets 13 may pass when the said chute is lowered into position in thecylinder 1 1.

As illustrated in the accompanying drawings, several modified forms ofconstruction may be used for closing the lower end of the chute 15. Inthe form of the invention as shown in Fig. 3 the lower end of the chuteis provided with the exterior flange 1S. Said flange is substantiallyrectangular in a horizontal plane, and the plate 19 is adapted to passunder the lower end of the chute 15, said plate having at its edges theintegral grooves 20, the upper edges of which are adapted to pass overthe u per surfaces of the flange 18 and hold the p ate 19 against themouth of the said chute. The plate 19 is provided with a handle 21, andthe form of the plate is shown in Fig. 4. The rear edge of the plate ICOIOS

is provided with the projections 22 which are adapted to extend acrossthe fire-box and come in contact with the back thereof, so that when theplate is shoved under the lower end of the chute for the purpose ofclosing the same it will be pro erly ositioned with relation to theoutlet ofp the c ute. In the form of the invention as shown in Fig. 5the lower end of the chute is provided with the grooved iianges 23.adapted to receive the edges of the flat plate 19, as shown in Fig. 6.It will thus be seen that the magazine-cylinder 11 and the chute may befilled -with fuel, and when it is desired to rake the coals withoutletting the fuel down the plate 19 is slip ed in position against theunder end of the c ute 15. Thus the flow of the fuel from the chute intothe JEre-box is cut 0H. When the Ere has been sufficiently cleaned, thesaid plate 19 may be withdrawn from the lower end of the chute l5, Whenthe fuel will fall from the said chute upon the bed of lire within thesaid fire-box.

It will also be seen that the said chute may be easily and readilylifted out of the cylinder ll for purposes of renewal or repair or topermit of thorough cleaning of the tubes 9 9. This furnace may be usedfor heating water or for generating steam, and when put to such use isprovided with suitable pipe connections. (Not shown in the drawings andwhich form no part of this invention.)

Having described my invention7 what I claim as new, and desire to secureby Letters Patent, is-

1. A furnace consisting of a casing, a irebox located within saidcasing, a magazinecylinder attached at its upper end to said casing andat its lower end to said fire-box, said cylinder having on its innersurface a vertical line of projections and at its lower Said flanges areend a horizontal line of projections, a chute adapted to slip withinsaid cylinder and having an exterior flange adapted to rest upon thehorizontal line of projections and a recess which receives the verticalline of projections and retains the chute against rotation.

2. A furnace consisting of a casing, a firebox located within saidcasing, a cylinder attached at its upper end to said casing and at itslower end to said nre-box, a line of rivets extending vertically andhaving projecting ends within said cylinder, a line of rivets extendinghorizontally and located at the lower end of said cylinder and havingprojecting ends, a chute having an exterior flange, sai

`chute adapted to slip within said cylinder,

said flange adapted to rest upon the horizontal line of rivets andhaving a recess which receives the vertical line of rivets ,and retainsthe chute against rotation.

3. A furnace consisting of a casing, a iirebox located in said casing, acylinder attached at its upper end to said casing and at its lower endto said iire-box, a removable chute supported within said casing, saidchute having at its lower end flanges, a plate adapted to slidablyengage said flange in such manner as to close the lower end of thechute, said plate having projections which are adapted to come incontact with the back wall of the fire-box when the plate is in closedposition under the chute and engaging the flanges when the plate is inopened position under the chute.

In testimony that I claim the foregoing as myown I have hereto affixedmy signature in the presence of two witnesses.

JOHN JOSEPH FINNIGAN.

Witnesses W. J. NALLEY, JOHN JOSEPH MCGARY.

